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Abhaya Indrayan (born 11 November 1945) is an Indian professor and researcher of Biostatistics. He had worked with different organizations and universities, including Delhi University College of Medical Sciences and the World Health Organization.

Dr. Abhaya Indrayan
Born (1945-11-11) 11 November 1945 (age 73)
Meerut, Uttar Pradesh
Other namesA. Indrayan
Known forHis work on medical biostatistics

Abhaya currently resides in Delhi NCR, India after his retirement. He is married and has two children.

Early life and educationEdit

Abhaya Indrayan was born on November 11, 1945, in Meerut, India. He was born during the time that India was fighting for its freedom from the British rule. That was the reason why his father, who was a freedom fighter, was jailed repeatedly for long periods.

Abhaya took his early education in Meerut from N.A.S. Inter. College and Meerut College. In 1977, he received his master's degree and Doctoral degree[1] from The Ohio State University in Columbus, Ohio, USA.


Abhaya Indrayan was the founding Professor and Head of the Department of Biostatistics and Medical Informatics[2] in Delhi University College of Medical Sciences. In 1995, his department was set up as an independent division, and was upgraded to a full department in 2005.[2]

During his tenure in the college since 1979, he had been the Sports Adviser, Coordinator of Medical Education Unit,[3] Chairman Computer Committee, Convenor Souvenir Committee, Incharge Annual Reports and held several other important assignments. He also taught online courses for the students of Institute of Statistics Education in Arlington County, Virginia.

He has more than 200 publications to his credit,[4] including the books Medical Biostatistics[5] and Concise Encyclopedia of Biostatistics for Medical Professionals.[6] A partial list of his publications appears at the website of Indian Academy of Sciences.[7] Among his other significant works are: smoking index[8] at Collection of Biostatistics Research Archive of Berkeley Electronic Press, which is among the top 5 downloads;[9] and estimates and projections of cardiovascular and diabetes cases in India,[10] which are quoted in the Government of India's official estimates at National Health Profile.[11]

He stayed in the institution until retiring in 2010, wherein he attained the age of 65.


Abhaya Indrayan collaborated with the World Health Organization for several projects including National Burden of Disease Studies: a Practical Guide,[12] Teaching Health Statistics,[13] and 11 Health Questions about the 11 SEAR Countries,[14] and served as Temporary Adviser to their Bi-Regional Consultation.[15] He was a technical editor of their biregional report Health in Asia and the Pacific[16] and participated in their debate on Health Systems Performance Assessment.[17] He has completed 32 assignments for the World Health Organization, 3 for the World Bank, 3 for UNAIDS and 2 for Danish Assistance to the National Program for Prevention and Control of Blindness. He has proposed Statistical Medicine [18] as a new emerging medical specialty.

Honors and awardsEdit

  • Elected Fellow of the Indian Academy of Sciences (2011).[19]
  • Fellow of the Royal Statistical Society.[20] (2002)
  • Elected Fellow of the National Academy of Medical Sciences (India) – a rare distinction for a non-medical scientist to be so honoured at that time (1998)[21]
  • Elected Fellow of the Indian Society for Medical Statistics (1996)
  • WHO Fellow and Visiting Research Scientist at the University of Massachusetts, Amherst, MA (1995)
  • Convenor, Special Interest Group on Medical Informatics, Computer Society of India (1994–1999).[22]
  • Chairman, Silver Jubilee Committee, Indian Society for Medical Statistics (2008–2011)
  • President-Elect of the Indian Society for Medical Statistics (2012–2014)
  • President, Indian Society for Medical Statistics, 2015


  • Indrayan, A. and Malhotra,RK (2017). Medical Biostatistics (4th ed.). CRC Press. ISBN 978-1-4987-9953-9.
  • Indrayan, A. (2017). Basic Methods of Medical Research (4th ed.). AITBS Publishers. ISBN 978-81-7473-335-1.
  • Indrayan, A. and Holt, MP (2016). Concise Encyclopedia of Biostatistics for Medical Professionals. CRC Press. ISBN 978-1-4822-4387-1.
  • Indrayan, A. (2013). Simple Biostatistics for MBBS, PG Entrance and USMLE (4th ed.). Academa Publishers. ISBN 978-81-88511-74-7.
  • Indrayan, A. (2012). Fundamentals of Medical Research: For emerging researchers (1st ed.). Lap Lambert. ISBN 978-3-659-20862-1.
  • Indrayan, A. (2006). Biostatistics for Medical, Nursing and Pharmacy Students (1st ed.). PHI Learning. ISBN 978-81-203-3054-2.
  • Indrayan, A. (1997). HIV/AIDS Research in India. National AIDS Control Organization.
  • Indrayan, A. (1986). Solution Manual for Introduction to Statistical Methods, Volume 1. Rowman & Allanheld.


  1. ^ "Department of Statistics, The Ohio State University, Graduation Year: 1975–1979". Archived from the original on 16 December 2016. Retrieved 26 October 2017. Cite uses deprecated parameter |dead-url= (help)
  2. ^ a b "Department of Biostatistics, University College of Medical Sciences, University of Delhi". Retrieved 26 October 2017.
  3. ^ "University College of Medical Sciences, Delhi University, Medical Education Unit". Retrieved 26 October 2017.
  4. ^ "Publications". Indrayan personal website. Retrieved 27 October 2017.
  5. ^ "Medical Biostatistics, CRC Press". Retrieved 27 October 2017.
  6. ^ "Concise Encyclopedia of Biostatistics for Medical Professionals, CRC Press". Retrieved 27 October 2017.
  7. ^ "Publication of Fellows, Indian Academy of Sciences". Retrieved 27 October 2017.
  8. ^ "A simple index of smoking". Retrieved 27 October 2017.
  9. ^ "Author Dashboard, Berkeley Electronic Press,". Retrieved 2 March 2013.
  10. ^ "Forecasting vascular disease cases and associated mortality in India, Background Papers, Burden of Disease in India, National Commission on Macroeconomics and Health, Government of India, 2005" (PDF). Retrieved 27 October 2017.[permanent dead link]
  11. ^ "Health Status Indicators, National Health Profile of India 2011, Government of India, pages 97 and 100," (PDF). Archived from the original (PDF) on 27 September 2013. Retrieved 27 October 2017. Cite uses deprecated parameter |dead-url= (help)
  12. ^ "National Burden of Disease Studies: A Practical Guide, Edition 2.0, World Health Organization, 2001, page iii" (PDF). Retrieved 27 October 2017.
  13. ^ "Teaching Health Statistics: Lesson and Seminar Outlines, World Health Organization, 1999, page viii" (PDF). Retrieved 27 October 2017.
  14. ^ "11 Health Questions about 11 SEAR Countries, World Health Organization, SEARO, 1999,". Retrieved 24 October 2017.
  15. ^ "Report on Regional Consultation and Technical Workshop on Health Systems Performance Assessment, WHO/SEARO, New Delhi, 18–21 June 2001" (PDF). Archived from the original (PDF) on 27 September 2013. Retrieved 27 October 2017. Cite uses deprecated parameter |deadurl= (help)
  16. ^ "Health in Asia and the Pacific, World Health Organization, South East Asia Region and Western Pacific Region, 2008," (PDF). Retrieved 24 October 2017.
  17. ^ "Health Systems Performance Assessment: Debates, Methods and Empiricism (eds. CJL Murray and DB Evans), World Health Organization, SEARO, 1999,". Retrieved 24 October 2017.
  18. ^ "Statistical Medicine". Retrieved 27 October 2017.
  19. ^ "Fellowship, Indian Academy of Sciences". Retrieved 27 October 2017.
  20. ^ "Fellowship, Royal Statistical Society, login required". Archived from the original on 5 May 2013. Retrieved 28 October 2017. Cite uses deprecated parameter |dead-url= (help)
  21. ^ "List of Fellows - NAMS" (PDF). National Academy of Medical Sciences. 2016. Retrieved 28 October 2017.
  22. ^ "Medical Informatics: Special Interest Group Set up by CSI appearing in NISSAT Newsletter No 2, 1994, pages 39–40" (PDF). Retrieved 28 October 2017.